diff --git a/src/main/java/org/apache/commons/math3/analysis/integration/gauss/LegendreHighPrecisionRuleFactory.java b/src/main/java/org/apache/commons/math3/analysis/integration/gauss/LegendreHighPrecisionRuleFactory.java
index 7dae1e1dc..ef40e0d90 100644
--- a/src/main/java/org/apache/commons/math3/analysis/integration/gauss/LegendreHighPrecisionRuleFactory.java
+++ b/src/main/java/org/apache/commons/math3/analysis/integration/gauss/LegendreHighPrecisionRuleFactory.java
@@ -193,6 +193,9 @@ public class LegendreHighPrecisionRuleFactory extends BaseRuleFactory<BigDecimal
             weights[idx] = tmp2;
         }
         // If "numberOfPoints" is odd, 0 is a root.
+        // Note: as written, the test for oddness will work for negative
+        // integers too (although it is not necessary here), preventing
+        // a FindBugs warning.
         if (numberOfPoints % 2 != 0) {
             BigDecimal pmc = BigDecimal.ONE;
             for (int j = 1; j < numberOfPoints; j += 2) {
diff --git a/src/main/java/org/apache/commons/math3/analysis/integration/gauss/LegendreRuleFactory.java b/src/main/java/org/apache/commons/math3/analysis/integration/gauss/LegendreRuleFactory.java
index 9bbb502f3..f8395eaec 100644
--- a/src/main/java/org/apache/commons/math3/analysis/integration/gauss/LegendreRuleFactory.java
+++ b/src/main/java/org/apache/commons/math3/analysis/integration/gauss/LegendreRuleFactory.java
@@ -129,6 +129,9 @@ public class LegendreRuleFactory extends BaseRuleFactory<Double> {
             weights[idx] = w;
         }
         // If "numberOfPoints" is odd, 0 is a root.
+        // Note: as written, the test for oddness will work for negative
+        // integers too (although it is not necessary here), preventing
+        // a FindBugs warning.
         if (numberOfPoints % 2 != 0) {
             double pmc = 1;
             for (int j = 1; j < numberOfPoints; j += 2) {